rebind main grid when update from details table

[Tom]

Hi,

Please help.
I am getting this error:
Sys.WebForms.PageRequestManagerServerErrorException: There was a problem extracting DataKeyValues from the DataSource. Please ensure that DataKeyNames are specified correctly and all fields specified exist in the DataSource.

When I update the order item with OrderDetail_UpdateCommand and then gridCustomer.Rebind() and I get the error I mentioned above.   Please help. Thanks.

ASPX:

<telerik:RadGrid ID="gridCustomer" runat="server" OnNeedDataSource="gridCustomer_NeedDataSource"
OnUpdateCommand="OrderDetail_UpdateCommand" OnDetailTableDataBind="gridOrder_DetailTableDataBind">
   <MasterTableView DataKeyNames="CustomerID" Width="100%" PageSize="20"   ClientDataKeyNames="CustomerID" >
      <DetailTables>
         <telerik:GridTableView DataKeyNames="OrderID" Name="OrderDetail"  EditMode="InPlace" >
         <Columns>
            <telerik:GridBoundColumn
               DataField="OrderName"
               HeaderText="Order Name"
               ReadOnly="true"/>
            <telerik:GridBoundColumn
               DataField="DateReceived"
               HeaderText="Date Received"
               ReadOnly="true" />
            <telerik:GridTemplateColumn
               HeaderText="Amount to Pay"
               EditFormColumnIndex="1"
               HeaderStyle-Width="140px" >
               <ItemTemplate>
                   <asp:Label runat="server" ID="lblAmountToPay" Text='<%# Eval ("AmountToPay", "{0:C}") %>'> </asp:Label>
               </ItemTemplate>
               <EditItemTemplate>
                   <telerik:RadNumericTextBox runat="server" ID="tbxUnitPrice" Width="40px" DbValue='<%# Bind("AmountToPay") %>'>
                   </telerik:RadNumericTextBox>
               </EditItemTemplate>
            </telerik:GridTemplateColumn>
           <telerik:GridEditCommandColumn UniqueName="EditOrderPrice" />
        </Columns>
    </telerik:GridTableView>
</DetailTables>
<Columns>
    <telerik:GridClientSelectColumn UniqueName="ClientSelectColumn" />
    <telerik:GridBoundColumn DataField="CustomerName" HeaderText="Customer Name">
    </telerik:GridBoundColumn>
    <telerik:GridBoundColumn DataField="Address" HeaderText="Address">
    </telerik:GridBoundColumn>
    <telerik:GridBoundColumn DataField="Phone" HeaderText="Phone">
    </telerik:GridBoundColumn>
    <telerik:GridBoundColumn DataField="Email" HeaderText="Email">
    </telerik:GridBoundColumn>
    <telerik:GridBoundColumn DataField="Group" HeaderText="Group">
    </telerik:GridBoundColumn>
  </Columns>
</MasterTableView>
<ClientSettings>
<Selecting AllowRowSelect="True" />
<ClientEvents OnRowSelected="GridCustomerRowSelected" />
</ClientSettings>
</telerik:RadGrid>

CODE BEHIND

protected void gridCustomer_NeedDataSource(object source, GridNeedDataSourceEventArgs e) {
       gridCustomer.DataSource = ClaimProcess.GetCustomer();
}

protected void gridOrder_DetailTableDataBind(object source, GridDetailTableDataBindEventArgs e) {
      switch (e.DetailTableView.Name)
      {
         case "OrderDetail":
         {
             GridDataItem dataItem = e.DetailTableView.ParentItem;
             e.DetailTableView.DataSource = ClaimProcess.GetOrder(dataItem.GetDataKeyValue("CustomerID"));
             break;
         }
      }
}

protected void OrderDetail_UpdateCommand(object source, GridCommandEventArgs e)
{
    GridEditableItem item = (GridEditableItem)e.Item;
    int OrderID = Convert.ToInt32(item.GetDataKeyValue("OrderID"));
    RadNumericTextBox txtAmountPay = (RadNumericTextBox)e.Item.FindControl("tbxUnitPrice");
    UpdateOrder(OrderID, Convert.ToDouble(txtAmountPay.Text));
    gridCustomer.Rebind();
}

[Pavlina]

Hello Tom,

Please verify if specified DataKeyNames are available in the grid data source.

Sincerely yours,
Pavlina
the Telerik team